Two numbers are in ratio 8:12. Their difference is 61. What is their sum? MCQ with Answer and Explanation

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Two numbers are in ratio 8:12. Their difference is 61. What is their sum?

A. 320

B. 452

C. 160

D. 357

Answer: Option A

Solution (By JKSSB Mock Tests)

Numbers 8k, 12k. Difference |8-12|k = 61 ⇒ k = 15. Sum = (8+12)k ≈ 320.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 8:3 and b:c = 3:9, then a:b:c = ?

A. 7:3:10

B. 8:3:9

C. 16:6:18

D. 8:4:9

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 8:3, b:c = 3:9 ⇒ a:b:c = 8:3:9.

This question belongs to: Maths Ratio and Proportion

Question #2

Milk and water are in ratio 7:2 in a 578 L mixture. Quantity of milk?

A. 898 L

B. 473 L

C. 449 L

D. 129 L

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Correct Answer: Option C

Explanation:
Total parts = 9. Milk = [7 / (7+2)] × 578 = 449 L.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 5:3 and b:c = 3:4, then a:b:c = ?

A. 10:6:8

B. 4:3:5

C. 5:4:4

D. 5:3:4

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 5:3, b:c = 3:4 ⇒ a:b:c = 5:3:4.

This question belongs to: Maths Ratio and Proportion

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